[Cliff] is... an engaging writer, with a keen ear for the fun metaphor and an observant eye when describing the scientific milieu in which he operates.

Cliff converts complex physics into eminently readable popular science..

It helps to have some familiarity with physics, but this book is accessible with clear explanations, a sprinkling of humor, and a dash of poetry. The combination makes for an engaging follow-up to Cliff’s previous book..

Superb.

Despite Cliff’s attempts to explain the issues in non-specialist terms, cosmology and particle physics are extremely complex areas, and some sections of the text are difficult to follow.